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Showing 1–20 of 20 matching trials from the live ClinicalTrials.gov search.
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Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1403 and mRNA-1405 to Prevent Norovirus Acute Gastroenteritis in Healthy Adults 18 to 80 Years of Age

NCT05992935
View directory record Official record
Conditions
Norovirus Acute Gastroenteritis
Interventions
mRNA-1403, mRNA-1405, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,407 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
14
States / cities
Long Beach, California • Longmont, Colorado • Hollywood, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Long-Term Immunogenicity of the Norovirus GI.1/GII.4 Bivalent Virus-like Particle (VLP) Vaccine (NoV Vaccine) in Adults

NCT03039790
View directory record Official record
Conditions
Healthy Volunteers, Norovirus
Interventions
NoV Vaccine
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
528 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
9
States / cities
Birmingham, Alabama • Fountain Hills, Arizona • Littleton, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Norovirus Challenge Study

NCT05212168
View directory record Official record
Conditions
Norovirus Infections
Interventions
VXA-G1.1-NN, Placebo Tablets, Norovirus GI.1 Norwalk Virus Inoculum
Biological · Other
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Trial of a Norovirus G1.1 and G2.4 Vaccine Administered Orally to Healthy Participants Aged ≥ 18 Years and ≤ 80 Years Old

NCT06944717
View directory record Official record
Conditions
Norovirus Infections
Interventions
VXA-G1.1-NN, VXA-G2.4-NS, VXA G1.1 NN-T, VXA G2.4 NS-T
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Serologic Assay Validation, Proficiency Testing, Safety and Immunogenicity of Norovirus GI.1/GII.4 Bivalent Virus-Like Particle Vaccine

NCT02475278
View directory record Official record
Conditions
Norovirus, Healthy Participants
Interventions
NoV GI.1/GII.4 Bivalent VLP Vaccine
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 49 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced Sep 20, 2026, 4:05 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Post-Marketing Safety Study of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) mRNA-1273 COVID-19 Vaccine in the United States

NCT04958954
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Not listed
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
Not listed
Enrollment
50,000,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 16, 2023 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose-Optimization Trial of VXA-G1.1-NN in Healthy Volunteers

NCT03125473
View directory record Official record
Conditions
Norovirus Gastroenteritis
Interventions
VXA-G1.1-NN Oral Vaccine
Biological
Lead sponsor
Vaxart
Industry
Eligibility
19 Years to 49 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated May 29, 2018 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Bivalent Norovirus Vaccine Study

NCT01168401
View directory record Official record
Conditions
Gastroenteritis
Interventions
NoV GI.1/GII.4 Bivalent VLP Vaccine, Saline
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 85 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
3
States / cities
Silver Springs, Maryland • St Louis, Missouri • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Nov 22, 2018 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Immunogenicity & Safety Study of Adenovirus Type 5 (AD5) Based Oral Norovirus Vaccines

NCT04875676
View directory record Official record
Conditions
Norovirus Infections
Interventions
VXA-G1.1-NN
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Ph 1b: Safety & Immunogenicity of Ad5 Based Oral Norovirus Vaccine

NCT04854746
View directory record Official record
Conditions
Norovirus Infections
Interventions
VXA-GI.1.NN, Placebo Tablet
Biological
Lead sponsor
Vaxart
Industry
Eligibility
55 Years to 80 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
3
States / cities
Cypress, California • New Orleans, Louisiana • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 12, 2023 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1, Open-label, Safety and Immunogenicity Study of an Oral Multi-dose Administration Regimen With an Adenoviral-vector Based Tablet Norovirus Vaccine (VXA-G1.1-NN) Administered to Healthy Adult Volunteers

NCT05213728
View directory record Official record
Conditions
Norovirus Infections
Interventions
VXA-G1.1-NN
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 55 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Jun 20, 2024 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy and Immunogenicity of Norovirus GI.1/GII.4 Bivalent Virus-like Particle Vaccine in Adults

NCT02669121
View directory record Official record
Conditions
Healthy Volunteers
Interventions
NoV Placebo-matching Saline, NoV GI.1/GII.4 Bivalent VLP Vaccine
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 49 Years
Enrollment
4,748 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Great Lakes, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Norovirus GI.1/GII.4 Bivalent Virus-Like Particle Vaccine in an Elderly Population

NCT02661490
View directory record Official record
Conditions
Norovirus
Interventions
Norovirus GI.1/GII.4 Bivalent VLP Vaccine, 0.9% sodium chloride (saline)
Biological · Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
320 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
10
States / cities
Birmingham, Alabama • Fountain Hills, Arizona • Littleton, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated May 17, 2020 · Synced Sep 20, 2026, 4:05 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

A Study to Investigate the Safety and Efficacy of mRNA-1403 in Participants ≥18 Years of Age for the Prevention of Acute Gastroenteritis

NCT06592794
View directory record Official record
Conditions
Acute Gastroenteritis, Norovirus Acute Gastroenteritis
Interventions
mRNA-1403, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years and older
Enrollment
37,864 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
184
States / cities
Birmingham, Alabama • Cullman, Alabama • Daphne, Alabama + 136 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Placebo-controlled, Randomized Trial of an Adenoviral-vector Based Norovirus Vaccine

NCT02868073
View directory record Official record
Conditions
Norovirus Gastroenteritis
Interventions
VXA-G1.1-NN (high dose) Oral Vaccine Tablet, VXA Placebo Tablets, VXA-G1.1-NN (low dose) Oral Vaccine Tablet
Biological · Other
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Serologic Assay Validation and Proficiency Testing of HIL-214 in Adults

NCT05972733
View directory record Official record
Conditions
Gastroenteritis
Interventions
HIL-214
Biological
Lead sponsor
HilleVax
Industry
Eligibility
18 Years to 49 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
2
States / cities
Rolling Hills Estates, California • Stockbridge, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Norovirus Bivalent Virus-Like Particle Vaccine in Healthy Adults

NCT02142504
View directory record Official record
Conditions
Norovirus Prevention
Interventions
Norovirus Bivalent VLP Vaccine, Placebo (Saline)
Biological · Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 49 Years
Enrollment
454 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
10
States / cities
San Diego, California • San Francisco, California • Coral Gables, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2017 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety & Immunogenicity Study of Ad5 Based Oral Norovirus Vaccines

NCT03897309
View directory record Official record
Conditions
Norovirus Infection
Interventions
VXA-G1.1-NN, VXA-G2.4-NS, Placebo Tablets
Biological
Lead sponsor
Vaxart
Industry
Eligibility
18 Years to 49 Years
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 20, 2022 · Synced Sep 20, 2026, 4:05 AM EDT
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Efficacy and Safety of Two Doses of HIL-214 in Children

NCT05281094
View directory record Official record
Conditions
Gastroenteritis
Interventions
HIL-214, Placebo
Biological
Lead sponsor
HilleVax
Industry
Eligibility
5 Months to 5 Months
Enrollment
3,084 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 9, 2025 · Synced Sep 20, 2026, 4:05 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Norovirus Bivalent-Vaccine Efficacy Study

NCT01609257
View directory record Official record
Conditions
Prevention From Norovirus Infection
Interventions
Norovirus Bivalent Vaccine, Saline Comparator
Biological
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 49 Years
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
5
States / cities
Atlanta, Georgia • Baltimore, Maryland • Rochester, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Sep 20, 2026, 4:05 AM EDT